抄録
A few Ginbuna, Carassius auratus langsdorfii, with nacreous-like (tomeirin-modoki) scaleness (symbolized ne) have been collected in upper reaches of the Tempaku river. Matings of a male nacreous-like fish with a matt Shubunkin (TT) female and a Wakin (tt) female have been made. It was found that nacreous-like scaleness is autosomal and controlled by a new mutant gene (ne) which is independent from the t-alleles of the goldfish.